Sorry to hear your struggling Ballsy. Please PM me your kettle and bag dimensions please and I will check the sizing.
From your description, I feel this issue is one of technique rather than bag sizing. You need to slowly lift the bag from the kettle allowing it to drain as you remove, being sure that the wort level remains below the kettle rim, then once you decide to complete the bag removal, it should be done swiftly, with no turning back. From your description, I feel you may have been a bit impatient removing the bag, and not allowing the bag to drain as it is slowly removed, but then when you tried to lower the bag back in the kettle may have worsened the situation.
If you have a larger grain bill, or your close to maxing your kettle, bag removal should be slow and easy, kinda like child birth or what got you there
If your wort level is close to the rim, the bag should be slowly ratcheted out if the kettle a few clicks at a go, then let drain. Might take 2-3 minutes but is nice and clean without spillage.